Thread: Petrol v diesel economy

my grand cherokee does 9l/100km on my ats, towing makes it 10/100 . does 11l/100km on muddies. i think thats decent milage.

Not too bad, those are petrol hey? What engine size?

iv got the 2.7 diesel. i wouldnt own a petrol jeep in this country you dont get the bang for buck theyre made for.

i had the 4l petrol and the worst mileage i ever got was 160km from a tank towing our small caravan through the sounds from nelson to french pass and back. id still own another one regardlesss those trucks are awesome offroaders.

Ouch, yeah that would be a little sore in the hip pocket with current petrol prices...

The new "Petroleum Fuels Engine Monitoring Levy" kicks in tomorrow, price on petrol & diesel will increase $0.06 per litre from 1st July.

Watching all these figures, I thought I would check out my F economy, it’s a 2014 2.4 Subaru Outback with all terrain tyres and lots of short hops around town. Heavy car with what could be considered an undersized motor. I try to be fugal but at heart I do push it at times probably because there’s not a lot of GO with the CTV gearbox as well, insipid. Bit stunned basically only 10ks per litre. Taking it for a run shortly so hoping that improves.
With all this climate change / electric BS etc I’m not inspired, at my time of life, to splash any more money on vehicles

we had a chat at work about fuel economy. our fuel bill has more than doubled since last year. partially explained as we have more technicians but it is really rough when you're unable to fully pass on the increased costs to service the client and thus have to eat it.

Anyone own a petrol 200 series ? Curious about real world mileage with them

I have one simple functional fuel saver measure which helps me bigtime - a light right foot. I purposefully drive on the first one inch of throttle. That is quite enough for all city driving/acceleration, and almost all open road bar overtaking and hills. My 4x4 3.1 Bighorn does 9.7 to 10.3L per 100ks on open road with 32" muds, and the little 1.5 Toyota ist runabout does 6.7L round town, and 5.6L per 100ks (50.3mpg) on open road. Apply the right foot, start quirting juice in and the equation changes very quickly.

The one inch rule of course does not apply to sportscars... Though even then my 350Z would return 31+mpg (9.1L/100ks), and Skyline 350GT Coupe gave 33mpg at best (8.6L/100k) on open road. With cops about.

I have been convinced for years that Autos use more fuel hence why I still drive a manual

That is a fair but somewhat moot point nowadays, as in a lot of vehicles you now cannot get anything other than a CVT auto...

Originally Posted by Happy Jack

I have been convinced for years that Autos use more fuel hence why I still drive a manual

Yes and yes maybe.
Old autos were shit house to drive and shit house for economy.
New autos have lots of gears and lock up in every gear and in theroy could be more efficient than a manual.
However in theroy there is no difference between theroy and practice but in practice there is always difference to theroy

Originally Posted by veitnamcam

Yes and yes maybe.
Old autos were shit house to drive and shit house for economy.
New autos have lots of gears and lock up in every gear and in theroy could be more efficient than a manual.
However in theroy there is no difference between theroy and practice but in practice there is always difference to theroy

Yeah, my 3.6l Outback with the lineartronic CVT, gets around 8 to 8.5l/100kms on the open road.
Sits at around 1700rpm and just runs on the torque.

Gets a bit thirsty around town (especially when enjoying the acceleration 221kws gives you)but combined I average around 10, really impressed with it for a bigger displacement engine.

Must say too, the new generation of CVT are a MASSIVE improvement in the early ones with chains driving the coupling rather than a rubber belt.
I was always wary of them after the early ones but this Subaru one is fantastic to drive and very reliable.



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I've got two RAV4, one diesel one gas, 2014 diesel in NZ and a 2015 gas in Canada, same spec vehicle.
average between 7.5-8L a 100km in the Diesel, down to 6l on the likes of the Canterbury Plaines.
8.5-9l on the gas, per 100km best i can get on the flat Pairire is 7.8 ish.
stop and go in town and traffic, the gas goes way up 13l or so, the diesel doesn't jump much. not seen it over 10l yet,
Travel in NZ is steeper and more turns, than were I am in Canada.
I recond its about 2.5 liters difference per hundred. given similar driving conditions, except round town,
the gas is more responsive, better round town,
I like the diesel more, as it holds speed much more readily on the open road,
regular 87 grade gas in Canada $1.89, diesel is $2.03 last few days.
Gas makes more sense here, and very few diesel SUV about,